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The Tunguska Event: Mysterious Explosion in Siberia

A picture of trees knocked down from the Tunguska Event in 1908.

At 7:14 a.m. on June 30, 1908, a giant explosion shook central Siberia. The explosion leveled 80 million trees. Although many believe a meteor caused the blast, no crater or pieces of meteorite have yet been found. What happened in Tunguska?

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Jennifer's 20th Century History Blog

Preserving White House Emails

Wednesday July 16, 2008
Last week, the U.S. House of Representatives passed the Electronic Message Preservation Act. This act, if passed by the Senate and if it survives a likely veto by President Bush, would require that the archivist of the United States develop a plan to record the email send and received by the White House. While the law is not only for historic preservation, it is also an effort by Congress to hold administrations accountable for their actions.

Maps of WWII Unexploded Bombs

Wednesday July 16, 2008
Using aerial photos and maps prepared by insurance companies following the Second World War, a private British company has prepared maps indicating the likely location of unexploded bombs throughout England. The maps point to more than 21,000 locations that may be the surprise home of Nazi munitions. The Telegraph reports on the maps and the interesting history of finding and defusing unexploded ordinance through the years since the war.

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